How To Seam Copper Sheets

Expansion and contraction are a function of temperature change material properties and the dimensions of the material.

How to seam copper sheets. For sheets up to 1 8 in. 6 4 mm or more. The weld should be started again and continued until the seam weld is completed. It is arguably the most time proven type of roof panel seam.

The backhand method is preferred for thicknesses of 1 4 in. Where lapped or bayonet type expansion provisions in work cannot be used or would not be sufficiently water weatherproof form expansion joints of intermeshing hooked flanges not less than 1. This type of seam is used wherever significant movement of the copper sheets is expected. Fabricate nonmoving seams in copper sheet with flat lock seams.

View the products. When welding thin sheets the forehand welding method is preferred.